![Polymer-grafted surface Interacting surface Mediating material Solvent Melt ,[object Object],[object Object],R drug H brush R protein σ Surface-surface interactions ,[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Defense
- 1. Modification of Surfaces Using Polymers: A Self-consistent Field Theory Study David Trombly Advised by Venkat Ganesan Thesis Defense June 29, 2011
- 4. Polymer-grafted surface Interacting material Homopolymer Surface-polymer interactions Diblock copolymer Random copolymer brush Stoykovich, et al., Science, 2005 B A
- 12. Self-consistent field theory (SCFT) w A ( r ), w B ( r ) q( r ,s) q c ( r ,s) s Stretching energy Enthalpy Incompressibility Grafted Free
- 20. Previous modeling work Matsen, JCP, 1997 B A Diblock on hard surface with preference for A Incommensurate Diblock on hard surface with chemical stripes Wang, et al, Macro, 2000 Commensurate D bulk B A
- 30. Acknowledgements Prof. Venkat Ganesan, Committee members, Ganesan research group (Victor Pryamitsyn, Manas Shah, Landry Khounlavong, Paresh Chokshi, Ben Hanson, Arun Narayana, Chetan Mahajan, Thomas Lewis, Gunja Pandav), Brandon Rawlings Funding: NSF (Award # 1005739) Robert A. Welch Foundation Grant F1599 US Army Research Office Grant W911NF-10-1-0346 Texas Advanced Computing Center
Notes de l'éditeur
- The reason polymer-particle systems are of interest is that they can be used to study a number of systems. For example… Don’t talk too long about this!
- The reason polymer-particle systems are of interest is that they can be used to study a number of systems. For example… Don’t talk too long about this!
- I: Au(2) PS(10)-SH; P = 125, N = 10; sigma = 1.67 II: Au(5) PS(10)-SH; P = 125, N = 10; sigma = 1.39 III: Au(2) PS(10)-SH; P = 125, N = 480; sigma = 9.21 Tell why we model plate + brush
- Say it right!
- poly~methyl methacrylate! ~PMMA! and poly~vinyl chloride! ~PVC!, poly~styrene! ~PS!, and poly~2,6-dimethyl-1,4-phenylene oxide! ~PXE! State objectives differently – motivate how we are extending the problem from the limiting cases
- Mention the presence of two kinds of chains We are proposing that SCFT provides a good way to study these systems
- I: Au(2) PS(10)-SH; P = 125, N = 10; sigma = 1.67 II: Au(5) PS(10)-SH; P = 125, N = 10; sigma = 1.39 III: Au(2) PS(10)-SH; P = 125, N = 480; sigma = 9.21 Tell why we model plate + brush
- What really matters is fEff
- Describe the interplay between enthalpy and entropy using SST Term 4 distinguishes the theory from autophobic Term 4 should be smaller for larger f Random copolymer should rearrange itself toward f = 1 Idea: modify term 4 based on fEff
- I: Au(2) PS(10)-SH; P = 125, N = 10; sigma = 1.67 II: Au(5) PS(10)-SH; P = 125, N = 10; sigma = 1.39 III: Au(2) PS(10)-SH; P = 125, N = 480; sigma = 9.21 Tell why we model plate + brush
- I: Au(2) PS(10)-SH; P = 125, N = 10; sigma = 1.67 II: Au(5) PS(10)-SH; P = 125, N = 10; sigma = 1.39 III: Au(2) PS(10)-SH; P = 125, N = 480; sigma = 9.21 Tell why we model plate + brush
- I: Au(2) PS(10)-SH; P = 125, N = 10; sigma = 1.67 II: Au(5) PS(10)-SH; P = 125, N = 10; sigma = 1.39 III: Au(2) PS(10)-SH; P = 125, N = 480; sigma = 9.21 Tell why we model plate + brush
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?
- Curvature?